Self-filling fountain-pen.



F. RIESENBERG.

SELF FILLING FOUNTAIN PEN.

APPLICATION FILED JUNE 21.1916.

Patented. Dec. 11, 191?.

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sans-marinas FOUNTAIN-run.

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which the following 18 a full specification.

My inventionrelates to fountaln, pen

fillers of the type which comprises an elastic ink sack adapted-to substantially fill the barrel of the pen, and means for compressing the sack to expel the air preparatory to inserting the nib end of the. pen into an ink reservoir. According} to my invention, as in most fillers of this type, thepressing means comprise a presser bar lying within the pen'filled and adapted to be pressed against the sack by means which lie exposed in the wall of the pen. v i

In pens of this class ll11S116C6SSitIy tO provide against accidental movements of the sack compressing parts as otherwise ink may be inopportunely expelled. Many devices havebeen suggested for lockingthe operating parts in rest position but so far as I know the devices which type of pen herem described either employ springs or auxiliary locking devices requiring separate manipulation.

simultaneously with The object of my invention is to provide improved means for locking the operating parts in rest position without the employment of springs, the locking being effected the return of the operating parts to rest position.

An illustrative embodiment of my invention is shown in the accompanying drawings in hich Figure 1 is a of a fountain pen equipped with a filler according to .my invention, the parts being shown in rest position. 1

Fig. 2 is alongitudinal sectionalview of the central portion ofthe pen. on an enlarged scale, also showing the operating parts in restpositi'on.

Fig. 3 is a view similar to Fig. 2 showing the operating parts in sack emptying position.

Fig. 41 is a transverse sectional View on the line IVIV of Fig. 2.

Fig. 5 is a detail view.

Referring more particularly to the drawings in which the reference numerals indicate the same or corresponding parts in all Specification of Letters Patent.

are applicable to the longitudinal sectional view Paten e Application filed June 27,1916. Serial 1%. 106,163.

the figures e-l, 2 and 3 indicate respectively a pen barrel,nib and feed bar of usual construction and assembled in the ordinary manner. An ink sack 4 of rubber or other suitable elastic material is connected at its open end in the usual manner with the feed bar 3 and forms a reservoir for ink which is supplied as required to the nib 2. A presser bar 15 lies against the sack 4;, the length and cross section of the bar being designed to effect, as, nearly as possible, a complete evacuation of the air in the sack when the bar is pressed againstit in the manner here A lever 6, which may be after described. called a transmission lever, is pivotally connected at 8, to the barrel 1 andlies in the longitudinal slot 5 of said barrel. At its lowerendtransmission lever 6 is connected withthe presser bar 15 by means ofpin 17, carried by transmissionlever 6, and slotted flange 16 carried by presser bar 15. crating barrel 1 at 9 and like transmission lever 6 lies within slot 5. The outer end 12 is under-cut and lies within the transverse groove or depression 13. lies upon transmission lever 6 intermediate the ends of the latter. As thus far described, the present device is substantially identical as thatdescribedand claimed in my copending application, filed November 9 29, 1915, Ser. No. 6 1055.

Intermediate itsends the transmission.

. P- lever 7 is pivotally connected to the The inner end of lever 7 lever 6has adjacent its outer edge arecess 14: adapted to receive the inner end of operatingleveni. It will be noted that recess 14 is for the most part open, but has at one end an overhanging lip 14..

end recessl l terminates in an abutment 14?.

The inner end of operating lever 7, is round ed and so dimensioned asto, fit snugly in the recess 14: when the parts are in rest position (Figs. 1 and 2). 1 On its under side the operating lever 7 has an obliquenotch 10 inclined toward its outer end 12. On the innersurface of barrel 1 an annular groove is.

At its opposite presses transmission 1 55 presserplate,

mounted" in sald slot and having operative displacement by.

reason o'fthe'engagement of lip 14 with the. 7

end oflever 7. It will thus be seen that 5 no movement of the operating parts can take place exceptat the will of the operator wh n it i es r d-t i ll th P with nls.

- and that the ink sack, when full, is wholly relieved from the weight of the'operating- 10 parts. The filling operation is performed by inserting-a finger nail under the end 12 'of the lever 7 and raising it from slot 5. As the lever7 approaches perpendicularity its .innerendslides within recess 14 and de lever 6 thus through Presser bar l5compressing the ink sack 4.

' Api'n and slotconnectmn bar 15.. and transmission lever 6 permits a slight alternative displacement of these parts, and thus avoids longitudinal displace ment of the presser bar.

Operating lever 7 is'held in perpendicular position by abutment li eoacti'ng with the acute angle be tween levers. 7 and 6. WViththe parts in th-i spositionthe pen nib is inserted in a reservloir' of ink and the lever 7 isthen snapped backinto restpo'sitionpermitting the sack ite expand under'its own elastic influence and thus-to draw in a chargeof ink and at the same positions 'ofrthe notch 10 and ringltwith respect to each-other are such that as lever 7' lS returned to rest position, ring 11 will beslightly displaced to the left and will then spring'back. into place within. the

notch 110i 1 Y I d'o-"not consider that my'invention is limitedto the precise form of interengag- 4o in-g means shownhere,

' the-particular snap-lock described; My in vention in its broadest aspectembraces man-y obvious" variations of the interlocking elements andthe means for locking together levers Sand 7 as they return to rest position in"'combinat ion with any suitable device tending to hold lever 6; Within the slot.

clfaiin 7 In a device of the characterdescribed,

' 5b" the-combination.with a'penbarrel having a longitudinal slot,- of an ink sack,a presser plate 'operatively engaged with said sack, a transmitting lever; pivotally mounted in said 7 slot and operatively engaged with said an operating lever pivotally Transmission leverv between presser time to 'return presser bar and transmission-lever 6' to rest position. The

nor, of course, to

engagement with said transmitting lever,

ating lever, said interlocking members engaging; one another when the parts return to rest position, and means tending to hold said operating lever in rest position.

2. In a device of the character described, the combination with a pen barrel having a longitudinal slot, of an ink sack, a presser plate operativelyengagcd with said sack, a transmitting lever pivotally mounted in said slot and operatively engaged with said p'resser plate, an operating lever pivotally mounted in said slot and having operative engagement with said transmitting lever, interlocking members carried respectively by said transmitting lever and said operating lever, said interlocking members engaging one another when the parts return to rest position, and a snap-lock for holding said operating lever in rest position.

3'. In a device of the character described the combination with a pen barrel having a longitudinal slot, of an ink sack, a presser plate operatively engaged witl' said sack, a

transmitting lever pivotally mounted in said slot and operati-vely engaged with said presser plate, an operating lever pivota-l ly mounted in'said slot and having its inner end in operative engagement with said transmission lever, and a recess adjacent the outer edge of said transmission lever and opened longitudinally, the said inner end of said operating lever moving into said recess when the parts return to rest position, substanti al lyasand' for the purpose described.

4. In a device of the character described, thecombination with a pen barrel having a longitudinal slot, of an ink sack, a presscr pta-te operatively engaged with said sack, a transmitting lever pivotally mounted in said slot and operativel yengaged with said presser pl ate', an operating leverpivotally mounted in said slot and having operative engagement with said transmitting lever, interlocking memberscarried respectively by said transmitting lever and said operating: lever, said interlocking members engaging one another when the parts return to rest position, and a snap-l ock for holding said operating lever in restposition, said snapleek comprising a ring concentrically disposed in the pen barrel and an. oblique notch in the inner edge of said operating lever.

FELIX RIESENBERG.

qoeiesoi thls patentmay be obtainedlfor five cents each, by: addressing. the; Commissioner of latents,

i t Washington, D. 0. 

